For this month’s Office Hours, we had a presentation from ResFrac Director of ResApps Operations, John McGrath. John gave a detailed demo (and sneak peek) of the soon-to-be-released IntTest ResApp. This ResApp implements two techniques for shale-well interference test interpretation – the CPG method and the Devon Quantification of Interference (DQI) method. The DQI method estimates conductivity of the fracture connection between wells and the ‘degree of production interference’ (DPI) between the wells. The DPI calculation accounts for formation properties and the wellbore geometries. The workflow provides a fast but effective procedure for optimizing well spacing and gun-barrel configuration.